Html modifications and setup file

Hello,
    We are interested in using django-filemanager.  In order to install it with our setup process, a setup.py is needed (please check the license variable).  As well, the style of import used with Image seems a little dated, and caused import errors.  Lastly, the DOCTYPE specified was invalid and caused Firefox to be unusable.  We have another pull request that depends on this one, but other than that, I think we can proceed with using django-filemanager and will likely contribute more in the future.  

Thanks!

SB